Automobile steer-by-wire device

Abstract

The utility model discloses an automobile steer-by-wire device which comprises a mechanical box installed in an automobile shell, a rotating shaft is arranged in the mechanical box, one end of the rotating shaft penetrates through the mechanical box and is fixedly provided with a first gear, a rack is meshed with the lower portion of the first gear, and a steering machine body is arranged at the bottom end of the rack. A second gear is arranged in the mechanical box, the second gear is fixed to the rotating shaft, third gears are meshed with the two sides of the second gear, two driving mechanisms used for driving the third gears to rotate are arranged on the mechanical box, and two driving mechanisms used for driving the third gears to move are arranged in the mechanical box. The drive-by-wire automobile steering device is reasonable in structure, and the event that the drive-by-wire automobile steering device is out of control when one drive mechanism breaks down can be avoided through matching of the two drive mechanisms and the driving mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production manufacturing technical field of drive -by -wire automobile steering, especially a kind of automobile drive -by -wire steering device. BACKGROUND

[0002] Drive -by -wire automobile steering refers to the way of controlling automobile steering by drive -by -wire, to control the direction of automobile travel, traditional drive -by -wire automobile steering device includes mechanical electric power steering device, and its power source is mainly driving motor, the characteristics of this kind of device is steering mechanism simple structure, processing is convenient, work is reliable, service life is long etc., but the existing mechanical electric power steering device usually power source only has a driving motor, once this driving motor fails, drive -by -wire automobile steering device will lose control, the final consequence is unbearable to imagine.For solving above problem, the following proposes a solution. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of automobile drive -by -wire steering device to solve the problems raised in the above background technology.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A kind of automobile drive -by -wire steering device, including the mechanical box of being installed in the inside of automobile shell, the inside of the mechanical box is provided with shaft, the one end of the shaft is arranged in mechanical box and is fixed with gear one, the gear one is engaged with rack below, the bottom end of the rack is provided with steering machine body, the inside of the mechanical box is provided with gear two, the gear two is fixed with shaft, the both sides of the gear two are engaged with gear three, the mechanical box is provided with two driving mechanisms for driving gear three rotation, the inside of the mechanical box is provided with two driving mechanisms for driving gear three movement.

[0006] As preferred, the driving mechanism includes driving motor, the driving motor is fixed on the outer wall of mechanical box one side and is fixed with the output shaft on the rotating rod, the rotating rod is fixed with gear four, the gear four is engaged with internal gear, the internal gear is fixed in the inside of gear three.

[0007] As preferred, the driving mechanism includes electric telescopic rod, the electric telescopic rod is fixed on the inner wall of mechanical box, the inner wall of mechanical box is fixed with limit rod between both sides, the limit rod is slidably connected with connecting plate, the connecting plate is provided with through slot, the through slot is fixed with connecting shell, the connecting shell is circularly arranged and is slidably connected on the rotating rod, the connecting shell is fixed on the outer wall of gear three one side.

[0008] As preferred, the electric telescopic rod is located above the limit rod.

[0009] The utility model discloses beneficial effect is: through the setting of two drive mechanisms can drive two gear three rotation, through the setting of two drive mechanisms can drive two gear three movement respectively, thereby can with gear two separate, finally can avoid one drive mechanism failure, when, the drive-by-wire car steering gear will lose the control event of happening. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of example;

[0011] Figure 2 It is the explosion section view of example;

[0012] Figure 3 It is Figure 2 The enlarged view of A of

[0013] Sign significance: 1, mechanical box;11, pivot;12, gear one;13, rack;14, steering machine body;2, gear two;21, gear three;3, drive mechanism;31, drive motor;32, rotating rod;33, gear four;34, internal gear;4, drive mechanism;41, electric telescopic link;42, limit rod;43, connecting plate;44, through slot;45, connecting shell. DETAILED DESCRIPTION

[0014] The following description is only the preferred embodiment of the utility model, and the protection scope is not only limited to the embodiment, and the technical scheme under the idea of the utility model should belong to the protection scope of the utility model to all the utility model. Same parts are indicated with same reference numerals. It is necessary to explain that, the words "front", "back", "left", "right", "up" and "down" in the following description refer to the direction in the drawing, and the words "bottom" and "top", "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a particular component.

[0015] As Figures 1 to 3As shown, a kind of automobile steer-by-wire device, including the mechanical box 1 installed in the car shell inside, the mechanical box 1 inside is provided with the rotating shaft 11, the rotating shaft 11 one end is arranged in mechanical box 1 and is fixed with gear one 12, gear one 12 below is engaged with rack 13, and the bottom end of rack 13 is provided with steering machine body 14, and steering machine body 14 is the existing steering machine, the mechanical box 1 inside is provided with gear two 2, gear two 2 is fixed with rotating shaft 11, and the two sides of gear two 2 are engaged with gear three 21, and the mechanical box 1 is provided with two driving mechanisms 3 for driving gear three 21 rotation;Two driving mechanisms 3 can be respectively driven to rotate by the setting, and two gear three 21 can be driven to rotate by the rotation of two gear three 21, and rotating shaft 11 and gear one 12 can be driven to rotate when gear two 2 rotates, and rack 13 can be moved by the rotation of gear one 12, and steering machine body 14 can drive several tires of the car to move when rack 13 moves, to realize the automatic steering of the car.

[0016] Driving mechanism 3 includes driving motor 31, and driving motor 31 is fixed on the outer wall of mechanical box 1 one side and is fixed with the rotating rod 32 on the output shaft, and the rotating rod 32 is fixed with gear four 33, and gear four 33 is engaged with internal gear 34, and internal gear 34 is fixed in gear three 21 inside;The rotation of rotating rod 32 can be driven by the start of driving mechanism 3, and gear four 33 can be driven to rotate when rotating rod 32 rotates, and internal gear 34 and gear three 21 can be driven to rotate by the rotation of gear four 33, and gear two 2 can be driven to rotate by the rotation of gear three 21.

[0017] The mechanical box 1 inside is provided with two driving mechanisms 4 for driving gear three 21 movement, and driving mechanism 4 includes electric telescopic rod 41, and electric telescopic rod 41 is fixed on the inner wall of mechanical box 1, and limiting rod 42 is fixed between the two sides of the inner wall of mechanical box 1, and electric telescopic rod 41 is located above limiting rod 42, and connecting plate 43 is slidably connected on limiting rod 42, and through groove 44 is formed in connecting plate 43, and connecting shell 45 is fixed in through groove 44, and connecting shell 45 is circularly arranged and is slidably connected on rotating rod 32, and connecting shell 45 is fixed on the outer wall of gear three 21 one side;When the above one driving motor 31 fails, electric telescopic rod 41 can be started to extend and drive connecting plate 43 to move on limiting rod 42, and connecting shell 45 can be moved on rotating rod 32 by the movement of connecting plate 43, and gear three 21 and internal gear 34 can be driven away from gear four 33 and gear two 2 when connecting shell 45 moves.

[0018] The two driving mechanisms 3 can drive the two gear threes 21 to rotate respectively, when the gear threes 21 rotate, the gear two 2 can be driven to rotate, when the gear two 2 rotates, the rotating shaft 11 and the gear one 12 can be driven to rotate respectively, the gear one 12 rotates and can drive the rack 13 to move, when the rack 13 moves, the steering machine body 14 can drive several tires of the automobile to move, so that the automatic steering of the automobile is realized; the two driving mechanisms 4 can drive the two gear threes 21 to move respectively, so that whether the two gear threes 21 are separated or engaged with the gear two 2 can be adjusted, finally, when one driving mechanism 3 fails, the event that the drive-by-wire automobile steering device will lose control can be avoided.

[0019] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the utility model, and it should be understood that the above-described specific embodiments are merely specific embodiments of the utility model and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A steer-by-wire system for automobiles, comprising a mechanical housing (1) installed inside the automobile body, characterized in that, The mechanical housing (1) is provided with a rotating shaft (11). One end of the rotating shaft (11) passes through the mechanical housing (1) and is fixed with a gear (12). A rack (13) meshes with the gear (12). A steering gear body (14) is provided at the bottom of the rack (13). A gear (2) is provided inside the mechanical housing (1). The gear (2) is fixed to the rotating shaft (11). Gears (21) mesh with both sides of the gear (2). Two drive mechanisms (3) are provided on the mechanical housing (1), both of which are used to drive the gears (21) to rotate. Two drive mechanisms (4) are provided inside the mechanical housing (1), both of which are used to drive the gears (21) to move.

2. The automotive steer-by-wire device according to claim 1, characterized in that, The drive mechanism (3) includes a drive motor (31), which is fixed on one side of the outer wall of the machine box (1) and has a rotating rod (32) fixed on its output shaft. A gear four (33) is fixed on the rotating rod (32), and an internal gear (34) meshes on the gear four (33). The internal gear (34) is fixed inside the gear three (21).

3. The automotive steer-by-wire device according to claim 1, characterized in that, The driving mechanism (4) includes an electric telescopic rod (41), which is fixed to the inner wall of the machine box (1). A limiting rod (42) is fixed between the two sides of the inner wall of the machine box (1). A connecting plate (43) is slidably connected to the limiting rod (42). A through groove (44) is opened on the connecting plate (43). A connecting shell (45) is fixed inside the through groove (44). The connecting shell (45) is circular and slidably connected to the rotating rod (32). The connecting shell (45) is fixed to one side of the outer wall of the gear three (21).

4. A steer-by-wire device for automobiles according to claim 3, characterized in that, The electric telescopic rod (41) is located above the limiting rod (42).

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